US4526682A - Screen assembly for separating particulate material - Google Patents
Screen assembly for separating particulate material Download PDFInfo
- Publication number
- US4526682A US4526682A US06/558,505 US55850583A US4526682A US 4526682 A US4526682 A US 4526682A US 55850583 A US55850583 A US 55850583A US 4526682 A US4526682 A US 4526682A
- Authority
- US
- United States
- Prior art keywords
- support
- screen
- guide
- support tray
- particulate material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
- B07B1/54—Cleaning with beating devices
Definitions
- the present invention relates to a screen assembly for use in an apparatus for separating particulate material of a selected size from particulate material of a smaller size and, more particularly, to a screen assembly for use in an apparatus for separating dust, dirt and other debris from a desired particulate material, such as commodity seed, or other desired product susceptible to separation by screening.
- seed cleaners are utilized to separate dust, dirt, weed seeds, and other fine debris from the desired commodity seed.
- a seed sifting or screening mechanism is employed.
- the screening mechanism typically provides a screen along an inclined plane which is agitated in a generally gyratory or oscillatory path.
- the particulate material to be cleaned is introduced onto the upper surface of the screen and vibration causes the particulate material to be conveyed along the screen surface.
- the movement of the particulate material along the screen causes the fines, such as the dust or other waste material, to be discharged through the apertures of the screen while the overs, such as the commodity seed, is collected at the end of the screening surface for further treatment or removal from the apparatus.
- screens employing different sized apertures are required to enable the user to efficiently match a particular screen with the particulate material being processed. If the container for the impacting balls is attached or affixed to the screen, screen replacement to accommodate a different type of particulate material becomes difficult and time consuming. Either a separate ball tray container must be provided with each screen, or the ball tray container must be detached from the original screen by removing the container fasteners and then reattaching the container to the selected replacement screen. This change over procedure is cumbersome and inefficient. If the screens are not frequently changed, the fasteners are often difficult to remove due to rusting or various other factors. In addition, conventional fasteners can be easily lost or misplaced in a farm environment.
- the efficiency of operation of a conventional seed cleaning and separating apparatus employing a brush-type cleaner may be increased by retrofitting the brush mechanism with a ball tray container having impact balls, thereby eliminating the brush mechanisms that is subject to servicing or breakage.
- the ball tray containers for the impact balls are conventionally attached or affixed to the individual cleaning screens, such an arrangement is not desirable, as previously noted, due to the inherent inefficiencies when changing the screens to accommodate different types of particulate material.
- a screening assembly in an apparatus for separating particulate material of selected size from particulate material of a smaller size.
- the screening assembly is readily adaptable for retrofitting an existing cleaning apparatus, while providing a tray assembly for screen impact elements that is efficiently interchangeable with different cleaning screens.
- the screening assembly comprises screen means having apertures of a selected size for receiving and separating the particulate material by permitting the fines contained within the particulate material to pass through the screen apertures, while retaining the overs on the screen surface.
- the impact elements such as balls, are provided for impacting the screen means to dislodge particulate material from the screen apertures.
- the tray assembly loosely supports the impact elements underneath the screen means and provides a support platform for the impact elements. The support platform is intermeshable with the screen means to form an enclosure for the impact elements.
- Agitator means is provided for agitating and vibrating the enclosure formed by the screen means and the support platform.
- the agitating movement of the apparatus impacts the screen means with the impact balls and conveys the particulate material along the screen means to separate the particulate material of the smaller size through the apertures in the screen means.
- First guide means is provided on the agitator means for receiving and supporting the screen means.
- Second guide means is provided on the agitator means, generally beneath the first guide means, for independently receiving and supporting the support platform under the screen means. The second guide means functions to retain the support platform in position underneath the screen means in a detached intermeshed relationship with the screen means.
- the second guide means provides the necessary support for the support platform, while the intermeshing of the support platform with the screen means retains the support platform and the screen means in registry with one another during operation of the apparatus.
- the screen means and support platform are essentially automatically separable.
- FIG. 1 is a perspective view, with parts broken away, of a screening assembly in accordance with the present invention for use in a screening apparatus for separating particulate materials;
- FIG. 2 is a fragmentary sectional view of the screening assembly taken along line 2--2 of FIG. 1;
- FIG. 3 is an exploded perspective view with parts broken away of the screening assembly illustrated in FIG. 1.
- a screen assembly generally designated 10 is depicted for use in a screening apparatus for separating particulate material, such as commodity seed or other desired products susceptible to separation by screening, from particulate material of a smaller size, such as dirt, dust, weed seeds, and other debris.
- the screening assembly 10 includes screen means or screen element, generally designated 12, having a screen 14, typically in the form of perforated metal or wire mesh, mounted on a generally rectangular frame 16.
- the screen 14 has apertures of a selected size to permit the passage of fines, such as the undersized waste products, therethrough during the treatment of the particulate material.
- the screen element 12 is removably mountable between a pair of driven agitator or rocker arms 20 and 21 of a screening apparatus (not shown).
- the screening apparatus can be of any conventional type having a gyrating or vibrating action, for example, such as a "Clipper Cleaner” made by Ferrell-Ross Company of Saginaw, Mich.
- the screen element 12 is mounted on the pair of opposing rocker arms 20 and 21 at a slight inclination.
- the respective rocker arms each include a recessed generally linear guide channel 22, which extends along the length of each rocker arm, the channels 22 being in parallel relationship on the opposing rocker arms.
- the screen element is removably and slideably insertable into the respective guide channels, which function to receive and support the screen element on the respective rocker arms.
- each of the guide channels 22 is lined with a metallic wear-resistant member 24 along the entire length of each channel.
- the wear-resistant members conform to the shape of the guide channels and are affixed to the rocker arms within the guide channels to provide a wear resistant lining.
- the particulate material is introduced onto one end, the upper end of the screen 14, that is, at the higher end of the inclined screen element 12.
- the rocker arms 20 and 21 are motor driven to vigorously agitate and vibrate the screen element.
- the particulate material introduced onto the screen 14 slowly migrates toward the lower end of screen 14 resulting in the smaller waste particles or fines being discharged through the apertures of the screen 14, while the overs, such as the desired particulate material, is retained on the screen and collected at the lower end for subsequent processing or removal.
- interchangeable screen elements having screens with apertures of various selected sizes are necessary.
- the screens can be efficiently matched to the type of particulate material being processed.
- the tray assembly 34 is generally rectangular and includes a wire mesh base 36 mounted on a metallic frame structure to serves as the support for the rubber balls.
- the metallic frame structure includes opposed pairs of sidewalls 38 which function to retain the rubber balls on the wire mesh base 36.
- the tray assembly 34 when assembled in the apparatus, is intermeshed with screen element 12 to form an enclosure for the rubber balls and to maintain the screen element and tray assembly in registry or operative relationship during the agitating operation of the rocker arms in the apparatus.
- the sidewalls 38 of the tray assembly are dimensioned and arranged to fit within, or intermesh with, the rectangular frame 16 of the screen element 12 forming the enclosure for the balls.
- the sidewalls 38 of the tray assembly project upwardly within the frame 16 of the screen element 12, as shown in FIG. 2, such that the screen element fits over the tray assembly to form, in effect, a lid.
- Generally outwardly extending planar projection members 45 are provided along each of the sidewalls 38 of the tray assembly.
- the tray assembly is not attached to the screen element 12 but is independently supported by support members or guide rails 50, which are mountable on the respective rocker arms 20 and 21 generally underneath and parallel to the recessed guide channels 22.
- the projection elements 45 provided on opposite sides of the tray assembly are slideably engagable with guide rails 50 and permit the tray assembly to be slideably inserted and supported between the opposing rocker arms 20 and 21 generally underneath the screen element 12.
- the tray assembly is intermeshed with the screen element forming the enclosure for the rubber balls, and the intermeshed structure is slideably inserted between the respective rocker arms 20 and 21 as a unit, as shown in FIG. 1.
- the screen element is solely and independently supported by the recessed guide channels 22 provided on the respective rocker arms while the tray assembly is independently supported by support rails 50.
- the intermeshed arrangement, but independent suspension, of the screen element and the tray assembly between the rocker arms eliminates the need for fasteners to interconnect and fasten the screen element with the tray assembly and facilitates automatic separation of the screen element and tray assembly upon removal from the apparatus.
- the guide rails 50 are in the form of angle rails having a generally planar sidewall 60 mounted on the inner surface of the respective rocker arms and an integral generally perpendicular planar support ledge 65, which projects outwardly from the rocker arm to be generally beneath and parallel to the respective guide channels 22.
- the top portion of the support wall 60 is snuggly inserted between a lower section of the wear resistant member 24 in the recessed guide channel 22.
- the support rail can be securely fastened to the rocker arm by conventional fastening means, such as screws 70, so that support ledge 65 is aligned and suspended beneath and parallel with the recessed guide channels 22 on the respective rocker arms.
- the tray assembly in accordance with the present invention, can be easily retrofitted into such an apparatus by simply installing the guide rail rails 50 into the respective screen guide channels 24 of the rocker arms 20 and 21, respectively, after the brush-type screen cleaner is removed.
- an access guide or alignment element 72 is provided on each rail 50 to guide the tray assembly onto the generally planar surface of the support ledge 65 at the leading edge or mouth of the support rails 50.
- the alignment elements 72 are formed by having the leading end of support ledge 65 bent slightly downward relative to the support plane to form the access alignment element.
- a grid of divider walls 55 is provided on the base of the tray assembly to divide the tray assembly into a series of separate individual rectangular compartments for enclosing the balls.
- a selected number of rubber balls, such as three, are contained within each individual compartment.
- the divider walls function to retain the rubber balls in designated areas underneath the surface of the screen 14 preventing the balls from leaving a designated area of the inclined tray assembly.
- the rocker arms vigorously vibrate or oscillate the screen element simultaneously with the tray assembly as a unit.
- the particulate material is introduced onto the end of the inclined screen 14.
- the smaller particulate material passes through the apertures of the screen element 14 and through the wire mesh base 36 of the tray assembly.
- the apertures of the wire mesh base 36 are much larger in cross-section than the apertures provided in screen 14.
- the support rails 50 function to independently support the tray assembly generally underneath the screen element 14, while the sidewalls 38 of the tray assembly extend upwardly within the frame 16 of the screen element 12 to maintain the tray assembly in registry with the screen element 12, preventing any lateral movement between the screen element and the tray assembly during the vigorous vibration of the rocker arms.
- Conventional stop elements such as retaining clips or the apparatus housing (not illustrated), are provided in cooperation with the guide channels 22 at their respective ends to prevent the screen elements from inadvertently sliding out of the ends of the guide channels.
- the tray assembly not be attached or affixed to the screen element 12, but be independently supported generally underneath the screen element, as previously described.
- the intermeshed unit of the screen element and tray assembly may easily be removed from the screening apparatus by sliding the unit out of the guides on the rocker arms. Once removed, the screen element is lifted from the tray assembly and another screen element is then placed into intermeshed position with the tray assembly. The new unit is then slideably inserted within the respective support guides provided on the opposing rocker arms. In this arrangement, the new screen element is independently supported on the opposing guide channels 24 in an intermeshed but unattached relationship with the tray assembly supported on guide rails 50.
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
Description
Claims (18)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/558,505 US4526682A (en) | 1983-12-06 | 1983-12-06 | Screen assembly for separating particulate material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/558,505 US4526682A (en) | 1983-12-06 | 1983-12-06 | Screen assembly for separating particulate material |
Publications (1)
Publication Number | Publication Date |
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US4526682A true US4526682A (en) | 1985-07-02 |
Family
ID=24229811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/558,505 Expired - Fee Related US4526682A (en) | 1983-12-06 | 1983-12-06 | Screen assembly for separating particulate material |
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US (1) | US4526682A (en) |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4886608A (en) * | 1988-10-24 | 1989-12-12 | Cook Gary E | Apparatus and method for separating liquids and solids |
US5051171A (en) * | 1990-04-27 | 1991-09-24 | Sweco Incorporated | Self-cleaning system for vibratory screens |
US5165550A (en) * | 1991-04-25 | 1992-11-24 | Rotex, Inc. | Ball cage insert and cage support for screening machine |
US5203965A (en) * | 1988-06-30 | 1993-04-20 | Pope & Talbot, Inc. | Utilization of sawdust for pulp production |
GB2276572A (en) * | 1993-03-31 | 1994-10-05 | Filter Screen Supply Limited | Screen frame assembly with frame-bonded screen cloth and removable ball tray |
US5851393A (en) * | 1995-11-14 | 1998-12-22 | Emerson Electric Co. | Screen assembly |
US6202856B1 (en) | 1999-09-22 | 2001-03-20 | Emerson Electric Co. | Vibratory screening system and screen therefor |
US6431368B1 (en) | 2000-07-05 | 2002-08-13 | Emerson Electric Co. | Vibratory screen |
US20040102117A1 (en) * | 2002-11-21 | 2004-05-27 | M-I L.L.C. | Vibratory screen |
US20050274655A1 (en) * | 2004-06-15 | 2005-12-15 | Barrett Robert M | Screen assembly designed to conform to the radius of vibrating shakers with crowned decks |
US20070125687A1 (en) * | 2005-12-01 | 2007-06-07 | Kutryk Edward A | Screen assembly for a vibratory separator |
US20090008299A1 (en) * | 2007-07-03 | 2009-01-08 | Ray Conger | Screen identification device for screening machines |
US20100018910A1 (en) * | 2005-12-06 | 2010-01-28 | Rotex Global, Llc | Screening machine screen panel |
US20110314652A1 (en) * | 2005-12-06 | 2011-12-29 | Rotex Global, Llc | Screening machine and associated screen panel |
CN102974532A (en) * | 2012-12-26 | 2013-03-20 | 镇江市科瑞制样设备有限公司 | Screening device |
US20130270184A1 (en) * | 2011-12-16 | 2013-10-17 | Meurer Research Inc. | Method and system for cleaning membrane filters |
CN103537432A (en) * | 2013-10-28 | 2014-01-29 | 江苏大唐机械有限公司 | Elastic ball type vibrating screen |
US20140262978A1 (en) * | 2012-05-25 | 2014-09-18 | Derrick Corporation | Injection molded screening apparatuses and methods |
WO2016125179A1 (en) | 2015-02-02 | 2016-08-11 | Tega Industries Limited | Screen cleaning device with flexible arms |
CN106862059A (en) * | 2017-03-06 | 2017-06-20 | 高佳 | A kind of efficient screeno used in chemical processing optional equipment |
US10046363B2 (en) | 2012-05-25 | 2018-08-14 | Derrick Corporation | Injection molded screening apparatuses and methods |
US10576502B2 (en) | 2012-05-25 | 2020-03-03 | Derrick Corporation | Injection molded screening apparatuses and methods |
USD915484S1 (en) | 2017-06-06 | 2021-04-06 | Derrick Corporation | Interstage screen basket |
US11161150B2 (en) | 2012-05-25 | 2021-11-02 | Derrick Corporation | Injection molded screening apparatuses and methods |
US11203678B2 (en) | 2017-04-28 | 2021-12-21 | Derrick Corporation | Thermoplastic compositions, methods, apparatus, and uses |
US11213857B2 (en) | 2017-06-06 | 2022-01-04 | Derrick Corporation | Method and apparatus for screening |
US11505638B2 (en) | 2017-04-28 | 2022-11-22 | Derrick Corporation | Thermoplastic compositions, methods, apparatus, and uses |
Citations (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US218530A (en) * | 1879-08-12 | Improvement in means for clearing the meshes of bolting-screens | ||
US1265267A (en) * | 1917-07-20 | 1918-05-07 | Orville Simpson Company | Sifting-machine. |
US1441812A (en) * | 1921-07-23 | 1923-01-09 | Landrichinger John | Wheat cleaner |
US1562311A (en) * | 1925-03-26 | 1925-11-17 | Robinson Mfg Company | Cleaner for sifting screens |
US2165946A (en) * | 1936-07-30 | 1939-07-11 | Wingfoot Corp | Handling of dusts, etc. |
US2226416A (en) * | 1939-05-31 | 1940-12-24 | Orville Simpson Company | Cleaner for sifting screens |
US2269289A (en) * | 1939-06-29 | 1942-01-06 | Allis Chalmers Mfg Co | Nonblinding vibrating screen |
US2296293A (en) * | 1940-08-02 | 1942-09-22 | Gump B F Co | Method of sifting |
US2332780A (en) * | 1941-04-24 | 1943-10-26 | Richmond Mfg Company | Screen cleaner |
US2395138A (en) * | 1942-06-18 | 1946-02-19 | Day J H Co | High-speed sifter |
US2497902A (en) * | 1945-12-06 | 1950-02-21 | Richmond Mfg Company | Screen clearer for gyratory sifters |
US2829772A (en) * | 1956-02-01 | 1958-04-08 | John T Landes | Purifier |
US2858023A (en) * | 1954-05-24 | 1958-10-28 | John O Holland | Cleaner apparatus for purifier sieves and the like |
US2946440A (en) * | 1956-12-17 | 1960-07-26 | Orville Simpson Company | Gyratory sifting machine |
US3565251A (en) * | 1968-12-30 | 1971-02-23 | Blaw Knox Co | Plastic internal screen |
US4122006A (en) * | 1977-09-28 | 1978-10-24 | Black Clawson, Inc. | Screening apparatus |
US4152253A (en) * | 1977-12-23 | 1979-05-01 | Summers Don D | Method and apparatus for a self-cleaning drilling mud separation system |
US4237000A (en) * | 1979-03-05 | 1980-12-02 | F. T. Read & Sons, Inc. | Shaker assembly for screening and scalping |
-
1983
- 1983-12-06 US US06/558,505 patent/US4526682A/en not_active Expired - Fee Related
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US218530A (en) * | 1879-08-12 | Improvement in means for clearing the meshes of bolting-screens | ||
US1265267A (en) * | 1917-07-20 | 1918-05-07 | Orville Simpson Company | Sifting-machine. |
US1441812A (en) * | 1921-07-23 | 1923-01-09 | Landrichinger John | Wheat cleaner |
US1562311A (en) * | 1925-03-26 | 1925-11-17 | Robinson Mfg Company | Cleaner for sifting screens |
US2165946A (en) * | 1936-07-30 | 1939-07-11 | Wingfoot Corp | Handling of dusts, etc. |
US2226416A (en) * | 1939-05-31 | 1940-12-24 | Orville Simpson Company | Cleaner for sifting screens |
US2269289A (en) * | 1939-06-29 | 1942-01-06 | Allis Chalmers Mfg Co | Nonblinding vibrating screen |
US2296293A (en) * | 1940-08-02 | 1942-09-22 | Gump B F Co | Method of sifting |
US2332780A (en) * | 1941-04-24 | 1943-10-26 | Richmond Mfg Company | Screen cleaner |
US2395138A (en) * | 1942-06-18 | 1946-02-19 | Day J H Co | High-speed sifter |
US2497902A (en) * | 1945-12-06 | 1950-02-21 | Richmond Mfg Company | Screen clearer for gyratory sifters |
US2858023A (en) * | 1954-05-24 | 1958-10-28 | John O Holland | Cleaner apparatus for purifier sieves and the like |
US2829772A (en) * | 1956-02-01 | 1958-04-08 | John T Landes | Purifier |
US2946440A (en) * | 1956-12-17 | 1960-07-26 | Orville Simpson Company | Gyratory sifting machine |
US3565251A (en) * | 1968-12-30 | 1971-02-23 | Blaw Knox Co | Plastic internal screen |
US4122006A (en) * | 1977-09-28 | 1978-10-24 | Black Clawson, Inc. | Screening apparatus |
US4152253A (en) * | 1977-12-23 | 1979-05-01 | Summers Don D | Method and apparatus for a self-cleaning drilling mud separation system |
US4237000A (en) * | 1979-03-05 | 1980-12-02 | F. T. Read & Sons, Inc. | Shaker assembly for screening and scalping |
Non-Patent Citations (4)
Title |
---|
Advertising brochure Carter Day s Advanced Design in Seed/Grain Cleaning, Bullentin SM3 82, Mar. 1982. * |
Advertising brochure Carter Day s Screen Machine, Bullentin B 3M 4/83, Apr. 1983. * |
Advertising brochure-Carter-Day's Advanced Design in Seed/Grain Cleaning, Bullentin SM3-82, Mar. 1982. |
Advertising brochure-Carter-Day's Screen Machine, Bullentin B 3M 4/83, Apr. 1983. |
Cited By (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5203965A (en) * | 1988-06-30 | 1993-04-20 | Pope & Talbot, Inc. | Utilization of sawdust for pulp production |
US4886608A (en) * | 1988-10-24 | 1989-12-12 | Cook Gary E | Apparatus and method for separating liquids and solids |
US5051171A (en) * | 1990-04-27 | 1991-09-24 | Sweco Incorporated | Self-cleaning system for vibratory screens |
US5165550A (en) * | 1991-04-25 | 1992-11-24 | Rotex, Inc. | Ball cage insert and cage support for screening machine |
GB2276572A (en) * | 1993-03-31 | 1994-10-05 | Filter Screen Supply Limited | Screen frame assembly with frame-bonded screen cloth and removable ball tray |
GB2276572B (en) * | 1993-03-31 | 1997-02-05 | Filter Screen Supply Limited | Screen frame assemblies |
US5851393A (en) * | 1995-11-14 | 1998-12-22 | Emerson Electric Co. | Screen assembly |
US6202856B1 (en) | 1999-09-22 | 2001-03-20 | Emerson Electric Co. | Vibratory screening system and screen therefor |
US6431368B1 (en) | 2000-07-05 | 2002-08-13 | Emerson Electric Co. | Vibratory screen |
US7682996B2 (en) | 2002-11-21 | 2010-03-23 | M-I L.L.C. | Vibratory screen |
US20040102117A1 (en) * | 2002-11-21 | 2004-05-27 | M-I L.L.C. | Vibratory screen |
US20050274655A1 (en) * | 2004-06-15 | 2005-12-15 | Barrett Robert M | Screen assembly designed to conform to the radius of vibrating shakers with crowned decks |
US7757864B2 (en) | 2004-06-15 | 2010-07-20 | M-I L.L.C. | Screen assembly designed to conform to the radius of vibrating shakers with crowned decks |
US20070125687A1 (en) * | 2005-12-01 | 2007-06-07 | Kutryk Edward A | Screen assembly for a vibratory separator |
US20100018910A1 (en) * | 2005-12-06 | 2010-01-28 | Rotex Global, Llc | Screening machine screen panel |
US20110314652A1 (en) * | 2005-12-06 | 2011-12-29 | Rotex Global, Llc | Screening machine and associated screen panel |
US8522981B2 (en) * | 2005-12-06 | 2013-09-03 | Rotex Global, Llc | Screening machine and associated screen panel |
US20090008299A1 (en) * | 2007-07-03 | 2009-01-08 | Ray Conger | Screen identification device for screening machines |
US9821275B2 (en) * | 2011-12-16 | 2017-11-21 | Meurer Reseach, Inc. | Method and system for cleaning membrane filters |
US20130270184A1 (en) * | 2011-12-16 | 2013-10-17 | Meurer Research Inc. | Method and system for cleaning membrane filters |
US10722846B2 (en) | 2011-12-16 | 2020-07-28 | Meurer Research, Inc. | Method and system for cleaning membrane filters |
US10307714B2 (en) | 2011-12-16 | 2019-06-04 | Meurer Research, Inc. | Method and system for cleaning membrane filters |
US10080994B2 (en) | 2011-12-16 | 2018-09-25 | Meurer Research, Inc. | Method and system for cleaning membrane filters |
US10967401B2 (en) * | 2012-05-25 | 2021-04-06 | Derrick Corporation | Injection molded screening apparatuses and methods |
US11161150B2 (en) | 2012-05-25 | 2021-11-02 | Derrick Corporation | Injection molded screening apparatuses and methods |
US11198155B2 (en) | 2012-05-25 | 2021-12-14 | Derrick Corporation | Injection molded screening apparatuses and methods |
US10046363B2 (en) | 2012-05-25 | 2018-08-14 | Derrick Corporation | Injection molded screening apparatuses and methods |
US9409209B2 (en) * | 2012-05-25 | 2016-08-09 | Derrick Corporation | Injection molded screening apparatuses and methods |
US10259013B2 (en) | 2012-05-25 | 2019-04-16 | Derrick Corporation | Injection molded screening apparatuses and methods |
US20140262978A1 (en) * | 2012-05-25 | 2014-09-18 | Derrick Corporation | Injection molded screening apparatuses and methods |
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US11000882B2 (en) | 2012-05-25 | 2021-05-11 | Derrick Corporation | Injection molded screening apparatuses and methods |
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US10994306B2 (en) | 2012-05-25 | 2021-05-04 | Derrick Corporation | Injection molded screening apparatuses and methods |
US10981197B2 (en) | 2012-05-25 | 2021-04-20 | Derrick Corporation | Injection molded screening apparatuses and methods |
US10974281B2 (en) | 2012-05-25 | 2021-04-13 | Derrick Corporation | Injection molded screening apparatuses and methods |
CN102974532A (en) * | 2012-12-26 | 2013-03-20 | 镇江市科瑞制样设备有限公司 | Screening device |
CN103537432A (en) * | 2013-10-28 | 2014-01-29 | 江苏大唐机械有限公司 | Elastic ball type vibrating screen |
WO2016125179A1 (en) | 2015-02-02 | 2016-08-11 | Tega Industries Limited | Screen cleaning device with flexible arms |
CN106862059A (en) * | 2017-03-06 | 2017-06-20 | 高佳 | A kind of efficient screeno used in chemical processing optional equipment |
US11203678B2 (en) | 2017-04-28 | 2021-12-21 | Derrick Corporation | Thermoplastic compositions, methods, apparatus, and uses |
US11505638B2 (en) | 2017-04-28 | 2022-11-22 | Derrick Corporation | Thermoplastic compositions, methods, apparatus, and uses |
USD915484S1 (en) | 2017-06-06 | 2021-04-06 | Derrick Corporation | Interstage screen basket |
US11213856B2 (en) | 2017-06-06 | 2022-01-04 | Derrick Corporation | Method and apparatuses for screening |
US11213857B2 (en) | 2017-06-06 | 2022-01-04 | Derrick Corporation | Method and apparatus for screening |
US11247236B2 (en) | 2017-06-06 | 2022-02-15 | Derrick Corporation | Method and apparatuses for screening |
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